| Coord 2000 | 20171+4127 |
Discov num | ARN 97 |
Comp | Coord arcsec 2000 | 20 17 01.24 +41 26 45.3 |
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| Date first | 1892 |
Date last | 2015 |
Obs | 12 |
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| Pa first | 221 |
Pa last | 220 |
P.A. Now (θ) | 220° |
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| Sep first | 12.6 |
Sep last | 12.8 |
Sep. Now (ρ) | 12.8" |
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| Mag pri | 9.96 |
Mag sec | 10.71 |
delta mag (ΔM) | 0.75 |
Spectral class | OB (blue) |
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| Pri motion ra | -001 |
Sec motion ra | -002 |
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| Pri motion dec | -004 |
Sec motion dec | -006 |
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| Notes | |||||||||||
| Precise pa | 220 |
Precise sep | 12.79 |
Constellation | Cygnus |
Tycho2 | 3159-00885-1 |
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| Gaia DR2 | 72283942400 |
HD | 228742 |
| coord_2000 | discov_num | comp | epoch | obs | pa | sep | mag_pri | mag_sec | spectr | notes | coord_arcsec_2000 |
| 20171+4127 | ARN 97 | 2007 | 5 | 220 | 12.8 | 9.96 | 10.71 | D | 201701.24+412645.3 | ||
| 20171+4127 | ARN 97 | 2010 | 7 | 220 | 12.4 | 9.96 | 10.71 | OB | 201701.24+412645.3 | ||
| 20171+4127 | ARN 97 | 2015 | 8 | 220 | 12.8 | 9.96 | 10.71 | OB | 201701.24+412645.3 |